Baking-oven



.YW. H. BEANES.

BAKING OVEN. y

APPLICATION FILED IuNE I6, 1920.

1,368,015. Patented Feb. 2L

3 SHEETS-S EE lavan/Z721- .H ,Beam/es fai@- o. IIIIIIIIIIIIIIIIIIIIIIII 92 IIIIIIIIIIIIIIIII IIIIIIIIIIIIIII 'IIIIIIIIIIIIIIIIA UNITED STATES lPri-Travi orifice.

v `wniiviriexHENRY BEANES, or rn'rERBoaoUGH, ENGLAND.

BAxiNovnN.

Application led June 16,

To allie/20m it may concern:

Be it known that I, VARWICK HENRY BEANES, a subject of the KingV of Great Britain and Ireland, residing at Westwood Works, Peterborough, in the county of Northants, England, have invented certain new and useful Improvements Relating to Baking-Ovens, of which the following is a speciy fication. Y Y

This invention relates to baking ovens of the type in which closed steam pipes or tubular heating elements are employed, such pipes or tubes projecting at one end into a re box or furnace lined with fire-brick oi' other refractory material.

The object of the invention is to provide for the ready and effective control and regulation of the heat transmission to the various parts of the oven to give the desired uniform or varying temperatures at the said parts as may be required during the baking operation.

The invention comprises the combination with an adjustable baille Vor deflector arranged between the respective groups of tube ends in the furnace, of a by-pass flue for which the said baffle or deflector may serve as a damper, the arrangement being such that the said flue is automatically opened and closed by the movements imparted to the baille or deflector to control and regulate the distribution or flow of the hot furnace gases over the respective groups of tube ends.

In one convenient application of the invention to bakers ovens having two main groups of pipes or tubes for the heating respectively of the top and bottom of the oven, the iron or other baffle or deflector is mounted in a hinged o1: pivotal manner in the furnace, between the said groups of tube ends projecting therein. A lever or levers or other convenient means are arranged on the exterior of the furnace for imparting the required pivotal or like movements to the deflector.

When the defleetor is at a vertical position in the furnace, or at such a position as will have no baffling effect on the hot gases flowing from the re over both groups of tube ends to the ordinary flue in'tiie usual manner, it serves as a damper or closing plate of a by-pass flue which forms a communication between the portion of the furnace Specification of Letters Patent 'Patented Fens, i921. 1920. serial no. 389,433.

between the upper and lower groups of tube lends and the ordinary or main flue beneath the damper controlling usual manner. Y

When the deflector is swung or moved from the vertical to a horizontal for approximately horizontal position, it serves to baffle or arrest thehot gases and so prevent the saine from impinging on the top lgroup of tube ends. By the said movement of the delector the latter is moved away from the furnace end of the by-pass `flue which is thus automatically opened for the escape of theA bafHed or deflected gases.

In connection with' the lever or levers or other devices for moving or adjusting the deflector, means are provided for holding the deflector at various positions between the two extreme positions in order that it may have a varying baflling effect, causing more or less of the gases to pass over the top -group of tube ends or to be diverted through the by-pass flue as may be required to give the desired temperature regulation within the oven.

- One or more adjustable baffles or deiectors may be employed and be variously arranged to suit the particular grouping of tube ends in the oven furnace.

Referring to the three accompanying sheets of explanatory drawings Figure 1 is a sectional side elevation and Fig. 2 a sectional front elevation of the furnace end of an oven, illustrating one manner of applying the invention.

Figs. 3 and 4 are sectional side elevations showing alternative ,ways of applying the invention.

The same reference letters in the dierent views 'indicate the same or similar parts.

As shown at Figs. l and 2, between the sucn flue ,in the upper lgroup a and lthe lower 'group b of service position by an external hand lever orV levers as The baiie can be retained at various positions by means of a retaining peg or pegs inrassociation with a fixed quadrant or like bar as g having apertures therein to receive the retaining peg.

The ordinary damper controlling the main flue is shown at h.'

In the example illustrated at Fig. 3 the opening to the by-pass flue d is in therear Wall of the furnace space or area e, While in the example at Fig. 4 the balile or delector c is adapted for sliding instead of pivotalmovements. In this latter case the opening or openings to the bypass ues as Z are closed, when the baffle or deflector c is drawn to its out of service position, by plates or extensions as c at the ends of the baffle.y

When the baille is pushed fullyin, the said extensions are accommodated in apertures in the rear Wall of the furnace area. Y Y v Having thus described my invention what I claim as new and desire to secure by Letters Patent is Vl. In baking ovens having'tubular heat-` ing elements with ends projecting into the fire box or furnace and disposed in groups respectively over and under each other theref in, the combination with a by-pass flue forming a communication from the portion of the furnace between the said groups of tube ends and the ordinary or main Ilue of the furnace, of means for thesimultaneous Variation of the effective area ofthe said portionof the furnace and of the extent of theV opening' of the said by-pass iue, as set the furnace, ofanadjustable balile or deflector disposed in ythesaid portion 4of the furnace and adapted both for thervariation Vof the effective larea of suchvportion and for the openingand closing of the said by-pass Hue, as set forth. s

In testimony whereof I have signed my name to this specification.

WARWICK HENRY BEANES. 

